Apparatus for electrical precipitation of suspended particles from gases



Jan. 1 1923. 1,442,301.

W. A; SHEEK.

APPARATUS FORELEC TRICAL PRECIPITATION 0F SUSPENDED PARTICLES FROM GASES. FILED FEB. 20. .1922.

INVENTOR. WaZ-Eerfl ee/f ATTORNEY Patented Jamie, 1923.

wALTEB sH-EEK, or one BEACH, CALIroniIIA, Assrenor. TO" INTERN TIONAL 1.442.301 PATENT oF ICE.

PRECIPITATION COMPANY, LOS ANGELES, CALIFORNIA,' A CORPORATION OF cALrronNIA.

.ArrAnATus Eon ELECTRICAL rnECIrr ATIoN or susr NnEn rAnTICLEs FROM. CAsEs.

Application filed'Iebruary 20, 1922 Serial lt'o. 537,994.

To all whom it may concern.

Be it known that I, WALTER A. SHEEK, :1

citizen of the ,United States, residing at Long Beach, in the county of Los Angeles and State 6f California,- have invented a new and useful Apparatus for Electrical Precipitation of Suspended Particles ,from

thereto:

Gases, of which the following is a specification.

' This invention relates to means for removing suspended material fromgases by -pass-' ing such gases betweenfelectrodes maintained at high potential difference. The main object of the present invention is to provide improved means for removing from the electrodes material deposited thereon.

v The accompanying drawings illustrate embodiments of my invention, and referring Fig. 1 is a horizontal section on-line 1-1' in Flg. 2 of a precipitator provided with my improved'cleaning means.

Fig.2 is a section on line 2-2 in Fig. 1.

Fig. 3 is a section on line 3-3 in Fig; 1.

Fig. 4 is a detail section on line 4-4 in Fi 3.

Fig. 5 is a detail section on line 5--5 in Fi 4.

" ig. 6 is a side elevation of a modified sist' of elements of relativelysmall area. mounted in frames 4 which are supported on beams 5 carried by insulators 6. I have shown the discharge electrode elements as horizontal rods mounted-invertical frames 4, but any other suitable form of discharge electrode elements mayjbe used. The discharge electrodes are mounted to permit of lateral motion, so as to enable them to be engagement wit moved against the collecting electrodes. For this purpose the supporting frames 4 of the discharge electrodeelements mayhave side bars 8 formed of round ipe, ada ted to rest in concave seats or sadd es 9 int beams. 55, so that the frames 4 can rock. or' oscillate. The frames 4 are preferably connectedtoether at their-lower ends by tie bars 10. Tormally thedischarge electrodes are held in stationar' position between the collecting electrodes, y the action of ravity or by mechanical retaining means, ut when the electrodes are to be cleaned the discharge electrodes are moved laterally to bring them into violent ontact with the collecting electnodes,so as to clean all theelectrodes by the same operation. This movement of. the electrodes may, if desired, be .efi'ected manually, or. it may be efi'ected automatically by the means shown inFigs. land 2, comprising a pair of rocking levers 12 pivoted on a "cas ng 13 extending laterally from flue 1, said r'ock ing lever carrying insulators 14'attached to the respective tie bars 10-and said levers having pivoted thereto links 15 havin notches 16 adapted to engage. crank pins 1 on a shaft 18 which is drlven by "connection to a motor 19, 01 otherwise." Links 15' are connected-by a bar 20 so as to move in unison, and are normally held in elevated position by counterbalance means 16, so as to be out of engagement with crank means 17, and to bringha notch'22 in link 15 into .a shoulder means 23 on the casing 13, to hold thedischarge electrodes in centered position. By: lowering the links 15, for example, by a handle 24 on one of said links, they-may he held in engagement with the operatingcranks 17 to cause oscillation of levers 12 andof the discharge electrodes operatedthereby: Other operating means may beused, for example,

as shown-in Fig. 6, the'tie bars 10 may connected directly to a link 15 releasably engaging the operating crank means' 17, saidlinkbein of insulating'material. [In this case the %ischarge electrodes may be normally centered by ably mounted on an insulator 2 The dischar e electrode system is con-.- nected by a mm 28 to any source of high potential preferably unidirectional, although a ternating p tent al may be used 1f desired.

,100' meansof'a in 26 releask A switch or circuit-breaker 29 is shown as included in the energizing connection for the 'precipitator, to enable the current to be shut off when the electrodes are being cleaned. The collecting electrodes are preferablygrounded.

Inthe operation of the apparatus, the gases to be treated are passed through the flue or chamber 1 and a high potential difference being'maintained between the electrodes, material suspended in the gases is caused by electrical action, to deposit on the electrodes. From time to time, when the electrodes require cleaning, the current is reference to the collecting electrodes.

It will be understood that my invention consisting in the provisidn for cleaning the electrodes by carrying certain of them to swing against certain others, is not limited to any particular construction of the electrodes, or arrangement of the electrodes, with respect to the gas stream. Thus, the gas stream may be caused to pass vertically or horizontally between the electrodes, or

I by contacting with the collecting and the discharge electrodes so as to be pervious to the gases, the gas stream may be caused to pass through, instead of between the elec trodes.

It is obvious that the relative movement of the discharge and collecting electrodes required for bringing them into contact may be effected by moving eitheror both of the sets of electrodes. Thus, as shown in Fig. 7, the collecting electrodes 2 may be mounted to rock on bearings 9' so as to strike the discharge electrodes 3,'and may be operated by direct connection to operating means, such as a handle 30.

What I claim is: v

1. In an electrical precipitator for removing suspended material from gases opposing electrodes one of which is movably mounted to swing toward or from-the other electrode, and. means for moving said movably mounted electrode to bring it against the other electrode so as to jar both electrodes.

2. A construction as set forth in claim 1 and comprising, in addition, means for nor mally holding said movably mounted electrode in stationary position, spaced from the opposing electrode.

3. An electrical precipitatgr comprising a gas receiving chamber, parallel collecting electrodes mounted in said chamber, insulated discharge electrodes mounted in said chamber andextending. between the respective collecting electrodes and adapted to be moved laterally into contact with the collecting electrodes, and means for moving said discharge electrodes laterally.

In testimony whereof I have hereunto subscribed my name this 7th day of February,

1922. WALTER A. SHEEK. 

